Itext7 dotnet get pdf info how to#
Itext7 dotnet get pdf info pdf#

That was a major step forward in terms of architectural design, especially if the goal is to convert HTML to PDF.īut let's not dwell on the past, let's see what pdfHTML can do for us. In iText 7, you have a Table and Cell object, and when you set a different font for the complete table, this font is inherited as the default font for every cell. If you wanted every cell to contain text in a font different from the default font, you needed to set that font for the content of every separate cell. The iText objects were completely redesigned to better match HTML tags and to allow setting styles 'the CSS way.'įor instance: in iText 5, you had a PdfPTable and a PdfPCell object to create a table and its cells.

Itext7 dotnet get pdf info pdf#

The layout is created by traversing that tree, an approach that is much better suited when dealing with HTML to PDF conversion. When a document is created with iText 7, a tree of renderers and their child-renderers is built. A lot of work was spent on the new Renderer framework. In 2016, we released iText 7, a brand new version of iText that was no longer compatible with previous versions, but that was created with pdfHTML in mind. If we really wanted to create a great HTML to PDF converter, we would have to rewrite iText from scratch. Unfortunately, some of these choices made it very difficult –if not impossible– to extend the functionality of XML Worker to the level of quality many developers expected. Several design choices that made perfect sense when iText was first released in the year 2000, were still present in iText 5 sixteen years later. When iText 5 was originally created, it was designed as a tool to produce PDF as fast as possible, flushing pages to the OutputStream as soon as they were finished. We'll take a closer look at this use case in chapter 4, converting XML to HTML in memory using XSLT, then converting that HTML to PDF using the pdfHTML add-on. They then populated the HTML with data, and used XML Worker to create the invoices as PDF documents, throwing away the original HTML. Rather than programming the design of an invoice in Java or C#, developers chose to create a simple HTML template defining the structure of the document, and some CSS defining the styles. A common use case was the creation of invoices. XML Worker expected predictable HTML created for the sole purpose of converting that HTML to PDF. We don't know of any implementations that used XML Worker for any other XML formats, but many developers used XML Worker in combination with jsoup as an HTML2PDF converter. A default implementation converted XHTML (data) and CSS (styles) to PDF, mapping HTML tags such as, , and to iText 5 objects such as Paragraph, Image, and ListItem. In 2011, iText Group released XML Worker as a generic XML to PDF tool, built on top of iText 5. To avoid this frustration, HTMLWorker was removed from recent versions of iText. This caused plenty of frustration because HTMLWorker didn't support every HTML tag, didn't parse CSS files, and so on. It was never meant to convert complete HTML pages to PDF, yet that was how many developers tried to use it. The goal of HTMLWorker was to convert small, simple HTML snippets to iText objects.

The HTMLWorker class was deprecated many years ago.

If that's the case, you've either been using the obsolete HTMLWorker class (iText 2), or the old XML Worker add-on (iText 5). If you've been working with iText in the past, you might remember the old HTML to PDF functionality. If you're new to iText, please jump to chapter 1 immediately.

Itext7 dotnet get pdf info how to#

In this tutorial, we'll learn how to convert HTML to PDF using pdfHTML, an add-on to iText 7. You can find a full list of features here.

NOTE: We are continually updating our features- and have some new features that are not included in this eBook yet.

Itext7-dotnet get pdf info